{"id":"automationdirect-gs21-11p0","model_id":"GS21-11P0","name":"AutomationDirect GS21-11P0","summary":"The GS21-11P0 is a DURApulse GS20 series general purpose AC variable frequency drive in an enclosed C-frame housing, mounted on a panel or wall. It takes single-phase 120 VAC input and drives three-phase induction or permanent magnet AC motors with 230 VAC output at 1 hp. It supports SVC, V/Hz, FOC or torque control modes, has integrated dynamic braking, and communicates over RS-485 using Modbus RTU or Modbus ASCII slave.","study_notes":["Series GS20; controller type general purpose; enclosed housing, panel or wall mounting.","Input is 1-phase 120 VAC; output is 3-phase 230 VAC.","Control modes: SVC, V/Hz, FOC or torque. Reverse capability is built-in.","Variable torque amperage rating 5.5 A; output frequency range 0.1-599 Hz; carrier frequency range 2-15 kHz.","Communication: (1) RS-485 (RJ45) and (1) USB B port, up to 115.2k baud, Modbus RTU Slave and Modbus ASCII Slave.","I/O: 7 discrete inputs (24 VDC, sinking/sourcing), 3 discrete outputs (relay/sinking/sourcing, one Form C SPDT relay), 2 analog inputs (current/voltage, 10-bit and 12-bit), 1 analog output (10-bit).","Input signal options: 4-20 mA, voltage, potentiometer or pulse train. Analog input ranges 0-20 mA / 4-20 mA and +/-10 VDC; analog output ranges 0-20 mA / 4-20 mA and 0-10 VDC.","Integrated dynamic braking; no integrated EMI filter; not internally bypassed.","Optional EtherNet/IP and Modbus TCP card available; EtherNet/IP and Modbus TCP are not built in.","Programming language: ladder. Connector type: spring clamp terminals. Fuse type: user-supplied external fuse.","Discrete output load current 3 A/point relay, 50 mA/point discrete.","Item shipping weight 3.3 lb."],"safety_notes":["Safe Torque Off (STO) is built-in.","Enclosure rating IP20; temperature rating -20 to +50 deg C.","A user-supplied external fuse is required.","UL Listed file # E198015; RoHS status Yes (see CE document); CE declarations available. No UL Recognized, UL Hazardous, or CSA file listed."],"sources":[{"url":"https://www.automationdirect.com/adc/shopping/catalog/drives_-a-_soft_starters/ac_variable_frequency_drives_(vfd)/general_purpose_vfds/gs21-11p0","title":"DURApulse AC General Purpose Drive: 120 VAC, 1hp with 1-phase input, (VFD) (PN# GS21-11P0) | AutomationDirect","accessed":"2026-10-26"},{"url":"https://cdn.automationdirect.com/static/specs/cutsheet/GS21-11P0_cutsheet.pdf","title":"GS21 11P0 cutsheet","accessed":"2026-10-26"}],"verification":{"status":"source_checked","checked_at":"2026-10-26","values":12,"method":"llm_source_check"},"updated_at":"2026-10-26","type":"hardware","spec":{"category":"vfd","manufacturer":"automationdirect","controllers":[],"weight_kg":1.49685,"supply_voltage":"120 VAC","rated_power_kw":0.7457,"rated_current_a":4.8,"frame_size":"C","output_type":"PWM output","ip_rating":"IP20","operating_temp_min_c":-20,"operating_temp_max_c":50,"joints":[],"protocols":["modbus-rtu","modbus-ascii"],"standards":[],"error_codes":[]},"url":"https://machineschema.com/hardware/automationdirect-gs21-11p0","license":"https://creativecommons.org/licenses/by/4.0/"}